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Physiological traits for drought phenotyping in cotton - doi: 10.4025/actasciagron.v33i1.9839 Agronomy
Brito, Giovani Greigh de; Embrapa Algodão; Sofiatti, Valdinei; Embrapa Algodão; Lima, Marleide Magalhães de Andrade; Embrapa Algodão; Carvalho, Luiz Paulo de; Embrapa Algodão; Silva Filho, João Luiz da; Embrapa Algodão.
The objective of this study was to identify physiological traits that could distinguish between cotton genotypes that were tolerant or sensitive to water deficits. The experiment was conducted in a completely randomized design through a factorial combination to analyze four genotypes (BRS 187 8H and ACALA SJ-4 - water deficit tolerant; CNPA 7H and SU-0450/8909 - water deficit sensitive) and two water regimes (watered/always irrigated and stressed/with a water deficit imposed at flowering). Irrigation was suspended for the plants in the water deficit treatment groups when their first flowers appeared. Leaf water potential (ψpd) was monitored until the plants reached -3.0 MPa predawn, at which point leaf samples were collected for analysis. The plants were...
Palavras-chave: abiotic stress; Gossypium; Water deficit Fisiologia de plantas cultivadas abiotic stress; Gossypium; Water deficit.
Ano: 2011 URL:
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